Fresh Jet Glitches Bedevil Boeing

By

Jon Ostrower And

Jack Nicas

Updated Jan. 9, 2013 8:24 a.m. ET

Boeing Co.'s flagship Dreamliner jet, plagued by years of production delays before getting off the ground, hit fresh trouble Tuesday as air-safety officials opened a formal probe into a fire that broke out on an empty plane, and another airline discovered wiring problems in one of its 787s.

Also Tuesday, a Japan Airlines Co. 787 preparing to take off for Tokyo from Boston was forced to return to the airport gate because of a fuel...